RHSA-2020:5351 - Security Advisory
Important: ksh security update
Security Advisory: Important
Red Hat Insights patch analysis
Identify and remediate systems affected by this advisory.
An update for ksh is now available for Red Hat Enterprise Linux 7.3 Advanced Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
KornShell (ksh) is a Unix shell developed by AT&T Bell Laboratories, which is backward-compatible with the Bourne shell (sh) and includes many features of the C shell. The most recent version is KSH-93. KornShell complies with the POSIX.2 standard (IEEE Std 1003.2-1992).
- ksh: certain environment variables interpreted as arithmetic expressions on startup, leading to code injection (CVE-2019-14868)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
For details on how to apply this update, which includes the changes described in this advisory, refer to:
- Red Hat Enterprise Linux Server - AUS 7.3 x86_64
- BZ - 1757324 - CVE-2019-14868 ksh: certain environment variables interpreted as arithmetic expressions on startup, leading to code injection
Red Hat Enterprise Linux Server - AUS 7.3
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